I found a nice section about librarians in the Star Trek novel "Star Trek Log Nine" by Alan Dean Foster:
[for a better understanding: Captain Kirk & Spock had just been circumvented by armed natives on a foreign planet and had been bereaft of their weapons, tricorders and communicators]
"There are times, Mr. Spock", Kirk went on, staring in amazement at his now empty hand, "when I think I should have been a librarian".
"There are those who believe the task of librarian would be equally challenging, Captain", Spock responded as the circle of lowered spears grew denser around them. (...) "Though it is undoubtedly less dangerous..."